2,5-Dihydrothiophene 1,1-dioxide
CAS 77-79-2
U.S. production volumes are classified as confidential business information.
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.
Where It Comes From
Customs basis: HS 293499 · basket
- 2023
- US production Confidential · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Finland
- Netherlands
- Canada
- Indonesia
- Mexico
- Taiwan
- South Korea
- Austria
- Croatia
- Sweden
- Ukraine
- Denmark
- Israel
- Czech Republic
- New Zealand
- Hong Kong
- Kyrgyzstan
- Australia
- Portugal
- South Africa
- Poland
- Slovenia
- Brazil
- Slovakia
- Vietnam
- Latvia
- Malta
- Hungary
- Romania
- Kenya
- Belarus
- Russia
- Turkey
- Norway
Why It Matters
Industrial Uses
- •Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
19 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| AA BLOCKS | United States | $0.05 | 25 kg | 98% |
| AK Scientific Specialized | United States | $0.10 | 500 g | 95% |
| AK Scientific, Inc. | United States | $0.13 | 500 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $0.18 | 500 g | 98% |
| Sigma-Aldrich | Germany | $0.18 | 500 g | 98% |
| Aaron Chemicals LLC | Hong Kong | $0.19 | 500 g | 98% |
| Angene Chemical | China → Hong Kong | $0.21 | 500 g | 98% |
| Combi-Blocks, Inc. | United States | $0.30 | 500 g | 98% |
| Fluorochem UK | United Kingdom | $0.97 | 25 g | 99% |
| AstaTech (2 weeks) | United States | $1.56 | 25 g | 95% |
| Angene International Limited | United States | $2.40 | 25 g | 98% |
| Interbioscreen | Hong Kong | $24.00 | 10 g | 95% |
| TargetMol Chemicals | China → United States | $26.00 | 2 g | — |
| Otava, Ltd. | Ukraine | $2280.00 | 50 mg | 95% |
| Otava, Ltd. (2 weeks) | Ukraine | $2724.00 | 50 mg | 95% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| Vitas M Chemical Limited | Hong Kong | $3170.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| Asinex | Netherlands | $6461.40 | 100 mg | 90% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID6021294Retrieved 2026-04-06
- PubChem · compound 6498Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
2,5-Dihydrothiophene 1,1-dioxide (CAS 77-79-2) https://chemicalindependence.com/chemical/77-79-2/ EPA CompTox (DSSTox): DTXSID6021294. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6021294 PubChem: 6498. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6498 EPA Chemical Data Reporting: 77-79-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 77-79-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293499 for CAS 77-79-2. Reporting year: 2024. https://usatrade.census.gov/